Boiler



(No Model.)

H. W. INNES.

BOILER.

Patented Feb. 1, 1898.

V TQH if 49 A ATTORNEYS.

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ROBERT w. nines, or OMAHA, NEBRASKA.

BOILER.

SPECIFICATION forming part of Letters Patent N 0. 598,374, datedFebruary 1, 1898-. Application filed June 11, 1897- Serial No. 640,307.(No model.)

.To all whom it concern:

Be it known that 1, ROBERT W. INNES, of Omaha, in the county of Douglasand State of Nebraska, have invented a new and Improved Boiler,of whichthe following is a full, clear, and exact description.

This invention is a steam-boiler having a water-jacket and a fire-boxwith which steampipes communicate,such pipes also communicat-ing withthe boiler whereby to establish a circulation through such parts andaccelerate the production of steam.

This specification is the disclosure of one form of my invention, whilethe claims define the actual scope of the conception.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a longitudinal section of the invention. Fig. 2 is asectional plan on the line 2 2 of Fig. 1. Fig. 3 is a sectionalelevation looking in the direction of the arrow at from the line 3 3 ofFig. 1. Fig. 4 is a sectional elevation looking in the direction of thearrow b from the line 3 3 of Fig. 1, and Fig. 5is a front elevation oftheapparatus.

The boiler 6 is seated in suitable masonry and has a steam-dome 7. Thefire-tubes of the boiler 6 open into a smoke-box 8, from which a stack 9leads. The fire-box or furnace has a stationary grate 10, with a movablesection 11 at the front thereof. I The section 11 rocks on thehorizontal shaft 12, one end of which is projected beyond the furnaceand formed with a crank 13, by which the movable section 11 of thefgratemay be operated to dump the ashes into the ash-pit beneath. A removablepin 14 is employed to hold the section 11 of the grate horizontal. Uponthe removal of this pin the weight of the coals on the section 11 willcause the section 11 to dump. The top and sides of the firebox orfurnace are formed of a water-jacket 15. The top of said water-jacket isbraced by two water-legs 16, respectively at the front and rear of thefire-box. The water-legs 16 respectively stand on and communicate withwater-beams 17, arranged, respectively, at the front and rear of thefurnace. A feedpipe 18 enters the waterq'acket 15, which is thereforethe primary receptacle of the water for the furnace. Running from therear edges of the jacket 15, from the rear water beam 17, and from therear water-leg 16 are a series of water-tubes 19. The water-tubes 19 runrearward beneath the boiler 6,-turn up at the rear end thereof, passthrough the top 20 of the shellthat covers the boiler 6,

' and communicate with a header 21:. Each pipe 7 19 has an extension 30run rearward through the masonry at the rear of the boiler and providedwith a plug by which the extensions 30 are closed. The pipes 19.n1ay beblown out by opening these extensions 30. header 21 is U-shaped,with itsarms projecting forward,and from the center of the header :21 a pipe 22leads to the top of the steam dome 7. The pipes 19, that pass from therear water-beam 17, extend slightly upward from saidbeam, as illustratedin Figs. 1 and 4, so as to place the said pipes 19 in the immediate pathof the products of combustion as the same pass rearward beneath theboiler 6 and thence forward through the fire-tubes of said boiler.Passing from the lower rear portion of the boiler 6 are return-tubes 23,

baffle-Walls 24, extending across between the sides of the masonrysupporting the boiler and each having a break 25 therein, said breaksbeing arranged at alternate sides of the walls 24, so that the gaseswill be made to travel tortuously beneath the boiler. The unbrokenportions of the walls24 extend upward to the lower surface of theboiler. The

upper edges of the walls 24 are provided with alternately-projectingbricks,as shown in Fig, 3, to absorb the heat from the passing gases.The tubes 19 run through the walls 24.

A watercolumn 26 is in communication with the boiler 6 by means of thepipe 27 and with the water-jacket 15 by means of the pipe The 28. Thewater-column 26 serves to indicate the condition of the water within theboiler.

The front and rear ends of the Water-jacket 15 have openings closed byplugs 29, which are removable to expose the openings. Through theseopenings the Water jacket and the tubes attached. thereto may be blownout or cleansed.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A boiler having a boiler proper, a shell inclosingthe same, a furnace located at the forward end of the boiler and havinga waterjacket at the top and sides thereof, a grate Within the furnace,a water-beam running along the rear edge of the grate and comm unicatingwith the Water-jacket, tubes running from the rear edge of thewater-jacket from the rear Water-beam and from the rear water-leg, thetubes passing beneath the boiler proper and running up past the rear endthereof, a header above the boiler proper with which header the saidtubes communicate, a tube leading from the header. to the dome of theboiler proper, and areturn-tube running from the boiler proper to thefurnace.

2. A boiler having a boiler proper, a shell iuclosin g the boilerproper, a furnace, the top and sides of which are formed by awaterjacliet, a grate beneath the water-jacket, water-beams runningtransversely at the front and rear of the grate and between the sides ofthe water-jacket, a water-leg standing on each water-beam and joiningthe top of the Waterjacket, tubes running from the rear Water-beam fromthe water-jacket and from the rear Water-leg, the tubes passing beneaththe boiler proper and up along the rear end thereof'to a point beyondthe shell, a header with which the tubes communicate, a tube leadingfrom the header to the boiler proper, and a return-tube running from theboiler proper to the furnace.

ROBERT W. INNES.

\Vitnesses:

JAMEs ANDERSON, GLEN DEYO.

